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Thread: Pyrocat Question

  1. #1
    Lascassas, TN
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    Pyrocat Question

    Not wanting to start the Pyro Wars again, will someone explain the advantages and disadvantages of Pyrocat HD verus Pyrocat MC?

    I am moving from shuffling film in tray to tanks with hangers. Film used is 4x5 and 8x10 FP4+ and 8x10 X ray processed .in PMK.

    Thanks
    Bill Kumpf

  2. #2

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    Re: Pyrocat Question

    Bill,

    If you're not using rotary processing, you should consider Obsidian Aqua:

    Distilled water 70ml
    Potassium metabisulfite 2g
    Catechol 25g
    Distilled water to 100ml

    Dilute 1:500 with 0.666% potassium carbonate solution

    Lots of advantages over any of the Pyrocats:

    http://www.largeformatphotography.in...=obsidian+aqua

  3. #3
    funkadelic
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    Re: Pyrocat Question

    Bill,
    I'm also using trays and FP4+. If you want to try some 510-pyro, you're not too far from me and I have about 200 ml left before I make another batch.
    I'll be mixing up some of the OA that Jay mentioned, but not sure when. I have all of the chemicals. I just have a few other things to complete from my TO DO list first.

    Chris

  4. #4
    LF/ULF Carbon Printer Jim Fitzgerald's Avatar
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    Re: Pyrocat Question

    Bill, depends on how you are going to print as far as the dilution and time. I use 2:2:100 for about 6-8 minutes with my Efke-25 and 1:1: 100 with the x-ray film. Generally the x-ray can be from 4-8 minutes. Hope this helps.

  5. #5

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    Re: Pyrocat Question

    Quote Originally Posted by Bill Kumpf View Post
    Not wanting to start the Pyro Wars again, will someone explain the advantages and disadvantages of Pyrocat HD verus Pyrocat MC?

    I am moving from shuffling film in tray to tanks with hangers. Film used is 4x5 and 8x10 FP4+ and 8x10 X ray processed .in PMK.

    Thanks
    Bill,

    Go to http://pyrocat-hd.com/, then the thread Pyrocat M Versus Pyrocat HD.

    For your work there would not be any advantage, IMO, between the two.

    Sandy
    http://www.sandykingphotography.com/
    For discussion and information about carbon transfer please visit the carbon group at Yahoo.
    https://groups.yahoo.com/neo/groups/...nTransfer/info

  6. #6
    Lascassas, TN
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    Re: Pyrocat Question

    Tray processing of FP4 in 4x5 as worked well for several years. Moving to 8x10 in X-Ray didn’t work well. I purchased the 1 gallon size deep tanks from Richard Wasserman primarily for the x-ray film to address the scratch issue. I am slowing moving to carbon printing.

    Some of the literature claimed Pyrocat negative will work for both sliver and alternative methods. That will allow me to print both.

    Jay - At this stage I still prefer to buy chemical in kit form although eventually I will switch to mix my own and this one looks interesting.

    Chris – Is this the summer for the “Nashville” get together?

    Jim – Thanks for the starting points.

    Sandy -Thanks for the web page link. I still want to do your carbon printing class.
    Bill Kumpf

  7. #7

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    Re: Pyrocat Question

    Bill, I understand. However, Artcraft Chemicals will make up any kind of kit you want -- just send them the ingredients and amounts.

    Here is a an example of OA with 35mm Pan F+, handheld --

    [IMG] Untitled by Jay DeFehr, on Flickr[/IMG]

    And a crop from the same negative --

    [IMG] Untitled by Jay DeFehr, on Flickr[/IMG]

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